Pressure regulator block



FIG. 1 is a perspective view of a pressure regulator block;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line portion of the figures is included to show unclaimedsubject matter only and forms no part of the claimed design.

CLAIM We claim the ornamental design for a pressure regulator block, asshown and described.